In recent years, the ephemeral gastronomic and leisure markets have grown significantly as a strategy to promote the authenticity of the region and the local community participation. These both objectives use to have a sustainable social dimension, as they focus on issues that have to do with the welfare of the local population; cultural heritage conservation; community participation in planning and tourism development; and health, hygiene, and safety linked to the gastronomic experience. In recognition, this paper aims to analyze the relevance of these social sustainable aspects in La Santa Market, a summer food and leisure event in La Costa Brava (Catalonia). Using a non-probability purposive sampling, the qualitative methodology bases on semi-structured interviews with 20 different stakeholders involved in this event. Additionally, secondary data about the economic situation and “grey” literature research of this market are used. Results show a positive and constant involvement of the local community and private organizations to enhance day-by-day La Santa Market, becoming a must event in their summer agendas.